@import"https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@400;500;600&family=Space+Mono:wght@400;700&display=swap";:root{font-family:Space Grotesk,sans-serif;line-height:1.4;font-weight:400;color:var(--text-strong);background-color:var(--bg);text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;--bg: #0f1117;--panel: rgba(22, 26, 35, .9);--panel-deep: rgba(16, 18, 26, .95);--text-strong: #f4f5f7;--text-muted: rgba(244, 245, 247, .65);--button: #1c2230;--button-ghost: rgba(255, 255, 255, .08);--button-accent: #f9d966;--button-primary: #67d1ff;--shadow: 0 24px 60px rgba(0, 0, 0, .45)}*{box-sizing:border-box}body{margin:0;min-height:100vh;background:radial-gradient(circle at top,rgba(103,209,255,.12),transparent 40%),radial-gradient(circle at 80% 20%,rgba(249,217,102,.12),transparent 45%),#0f1117;overscroll-behavior:none;touch-action:none}#root{min-height:100vh}button{font-family:Space Grotesk,sans-serif}.calculator-display,.calculator-result{font-family:Space Mono,monospace}.app{min-height:100vh;display:grid;place-items:center;padding:clamp(1.5rem,4vw,3.5rem)}.calculator{width:min(420px,92vw);display:grid;gap:1.75rem}.calculator-header{text-align:left;color:var(--text-strong)}.calculator-kicker{font-size:.75rem;letter-spacing:.22em;text-transform:uppercase;color:var(--text-muted);margin:0 0 .35rem}.calculator-title{font-size:clamp(2rem,4vw,2.6rem);margin:0}.calculator-shell{background:var(--panel);border-radius:28px;padding:1.5rem;box-shadow:var(--shadow);border:1px solid rgba(255,255,255,.08);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.calculator-display{background:var(--panel-deep);border-radius:20px;padding:1.25rem 1.5rem;display:grid;gap:.45rem;color:var(--text-strong);min-height:110px}.calculator-expression{font-size:.95rem;color:var(--text-muted);min-height:1.2rem;word-break:break-all}.calculator-result{font-size:clamp(1.9rem,5vw,2.5rem);font-weight:600;text-align:right;word-break:break-all}.calculator-keys{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:.75rem;margin-top:1.5rem}.calc-button{border:none;border-radius:16px;padding:.95rem .85rem;font-size:1.1rem;font-weight:600;color:var(--text-strong);background:var(--button);box-shadow:inset 0 -2px #0000004d;transition:transform .15s ease,box-shadow .15s ease,background .2s ease;cursor:pointer}.calc-button:hover{transform:translateY(-1px);box-shadow:inset 0 -1px #00000040,0 8px 20px #00000026}.calc-button:active{transform:translateY(1px);box-shadow:inset 0 1px #00000059}.calc-button.wide{grid-column:span 2}.calc-button.ghost{background:var(--button-ghost);color:var(--text-muted)}.calc-button.accent{background:var(--button-accent);color:#0c0f14}.calc-button.primary{background:var(--button-primary);color:#0c0f14}@media(max-width:480px){.calculator-shell{padding:1.2rem}.calculator-display{padding:1rem 1.1rem}.calc-button{padding:.85rem .5rem}}